condition mean min max ZT0-3 0.017880033333333333 0.0 0.02684385 ZT4-7 0.0 0.0 0.0 ZT8-11 0.0 0.0 0.0 ZT12-15 0.01345645 0.0 0.0269129 ZT16-19 0.0515095 0.0515095 0.0515095 ZT20-23 0.02906535 0.02906535 0.02906535